Dab tsi yog cov dawb radicals hauv daim tawv nqaij?
Dab tsi yog cov dawb radicals hauv daim tawv nqaij?

Video: Dab tsi yog cov dawb radicals hauv daim tawv nqaij?

Video: Dab tsi yog cov dawb radicals hauv daim tawv nqaij?
Video: Dab neeg. Ua neej nrog hlua dai tuag 6/14/2017 2024, Kaum ib hlis
Anonim

Dawb radicals tuaj yeem ua rau puas tsuaj tawv nqaij los ntawm kev sim lob ib qho hluav taws xob ntxiv los ntawm atoms hauv tawv nqaij . Thaum cov atom raug tshem tawm ntawm cov molecules nyob rau hauv lub tawv nqaij , nws ua kev puas tsuaj rau peb daim tawv nqaij DNA uas tuaj yeem ua kom nrawm nrawm tawv nqaij kev laus. Qhov no hu ua " dawb radical txoj kev xav ntawm kev laus."

Yog li ntawd, kuv yuav ua li cas txo cov dawb radicals hauv kuv daim tawv nqaij?

Siv cov tshuaj antioxidants rau ntawm qhov chaw tawv nqaij tuaj yeem pab txhawb koj lub cev muaj peev xwm ua kom muaj zog antioxidant, lossis pab ncaj qha rau kev ua kom tsis zoo dawb radicals . Thaum siv tshuaj pleev ib ce, cov tshuaj antioxidants tuaj yeem pab ua kom qeeb cov txheej txheem uas ua rau cov proteins hauv lub cev tawv nqaij , xws li collagen fibers.

Ib yam li ntawd, qhov piv txwv ntawm cov dawb radical yog dab tsi? Ib qho tseem ceeb piv txwv ntawm cov dawb radical yog hydroxyl radical (HO•), ib lub molecule uas yog ib qho hydrogen atom luv ntawm cov dej molecule thiab yog li muaj ib daim ntawv cog lus "dangling" los ntawm cov pa.

Ib sab saum toj, dab tsi yog dawb radicals hauv lub cev?

Dawb radicals yog cov molecules tsis ruaj khov uas tuaj yeem ua rau lub hlwb puas lub cev . Lawv tsim thaum atoms lossis molecules nce lossis poob electrons. Lawv feem ntau tshwm sim los ntawm cov txheej txheem metabolic.

Puas yog dawb radicals ua pob txuv?

Dawb radicals , uas yog cov molecules unleashed los ntawm UV teeb (a.k.a. tshav ntuj) thiab huab cua muaj kuab paug, yeej ua rau tag nrho ntuj txiag teb tsaus kom tawg ntawm daim tawv nqaij. Lawv rhuav tshem collagen, tsim cov chaw tsaus nti (lwm qhov kev tshawb pom tshiab), thiab tseem ua rau DNA puas tsuaj - thiab tam sim no lawv ua pob txuv , too. "Qhov no blocks pores thiab ua rau txoj kev loj hlob ntawm pob khaus ."

Pom zoo: